Structure of a baseball

ABSTRACT

A base ball includes a central spherical core made of high density cork, a plurality of highly elastic rubber layers wound upon said core, a first layer of blended wool yarns with different diameters wound upon said rubber layers, a second layer of blended wool yarns with different diameters wound upon said first layer, a moisture proof layer of soft foam wound upon said second layer, a layer of yarns wound upon said moisture proof layer and then sprayed with adhesive agent, and an outer cover encasing said layer of yarns, whereby the moisture proof layer of soft foam can effectively prevent the base ball from getting moisture and can provide stable resiliency thereby enabling the base ball to keep its weight and resiliency at a stable condition and therefore warranting fair play even in bad weather.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] This invention is related to an improvement in the structure of a baseball and in particular to one which is moisture proof and water proof and stable in resiliency.

[0003] 2. Description of the Prior Art

[0004] Referring to FIG. 1, the conventional baseball generally includes a central spherical core 10 which is made of high density cork, a plurality of highly elastic rubber layers wound upon the core 10, a first layer 11 of blended wool yarns or other yarns with different diameters wound upon the rubber layers, a second layer 12 of blended wool yarns or other yarns with different diameters wound upon the first layer 11, a layer 13 of yarns wound upon the second layer 12 and then sprayed with adhesive agent, and an outer cover 14 encasing the layer 13. However, the first and second layers 11 and 12 can absorb water from the air and so when used in bad weather, the conventional baseball will absorb water thereby increasing its weight and when the first and second layers 11 and 12 absorb water, their elasticity will decrease obviously. As a consequence, the pitcher cannot control the base ball as desired and the route of the base ball hit by the batter will be unpredictable hence making it unable to warrant a fair play.

[0005] Therefore, it is an object of the present invention to provide an improvement in the structure of a baseball the weight of which can keep stable and will hardly be changed by weather.

SUMMARY OF THE INVENTION

[0006] This invention is related to an improvement in the structure of a base ball.

[0007] It is the primary object of the present invention to provide an improved base ball having a moisture proof layer of soft foam which can effectively prevent the base ball from getting moisture and can provide stable resiliency thereby enabling the base ball to keep its weight and resiliency at a stable condition and therefore warranting fair play even in bad weather.

[0008] According to preferred embodiment of the present invention, a base ball includes a central spherical core made of high density cork, a plurality of highly elastic rubber layers wound upon said core, a first layer of blended wool yarns with different diameters wound upon said rubber layers, a second layer of blended wool yarns with different diameters wound upon said first layer, a moisture proof layer of soft foam wound upon said second layer, a layer of yarns wound upon said moisture proof layer and then sprayed with adhesive agent, and an outer cover encasing said layer of yarns.

[0009] The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.

[0010] Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.

BRIEF DESCRIPTION OF THE DRAWINGS

[0011]FIG. 1 is a sectional view of a conventional base ball; and

[0012]FIG. 2 is a sectional view of a base ball according to the present invention.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

[0013] For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings. Specific language will be used to describe same. It will, nevertheless, be understood that no limitation of the scope of the invention is thereby intended, alterations and further modifications in the illustrated device, and further applications of the principles of the invention as illustrated herein being contemplated as would normally occur to one skilled in the art to which the invention relates.

[0014] With reference to FIG. 2, the base ball according to the present invention generally comprises a central spherical core 20 which is made of high density cork, a plurality of highly elastic rubber layers wound upon the core 20, a first layer 30 of blended wool yarns with different diameters wound upon the rubber layers, a second layer 40 of blended wool yarns with different diameters wound upon the first layer 30, a moisture proof layer 70 of soft foam wound upon the second layer, a layer 50 of yarns wound upon the moisture proof layer 70 and then sprayed with adhesive agent, and an outer cover 60 encasing the layer 50 of yarns.

[0015] The major characteristic of the baseball according to the present invention resides in the moisture proof layer 70 of soft foam between the second layer 40 of blended wool yarns with different diameters and the layer 50 of yarns. The moisture proof layer 70 can effectively prevent the passing of moisture and therefore keeping the first and second layers 30 and 40 in a dried condition. As a consequence, the weight and resiliency of the baseball according to the present invention are relatively stable. Furthermore, since the moisture proof layer 70 of soft foam is elastic, the contact time between the baseball and the bat (not shown) will be increased thereby stabilizing the resilient force of the baseball. Moreover, as the moisture proof layer 70 of the soft foam has good toughness and elasticity, it can spread the force to the whole ball evenly and can return to its original shape rapidly.

[0016] In conclusion, the moisture proof layer 70 of soft foam between the second layer 40 of blended wool yarns with different diameters and the layer 50 of yarns can effectively prevent the base ball from getting moisture and can provide stable resiliency thereby enabling the base ball to keep its weight and resiliency at a stable condition and therefore warranting fair play even in bad weather.

[0017] It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.

[0018] While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention. 

I claim:
 1. A base ball comprising: a central spherical core made of high density cork; a plurality of highly elastic rubber layers wound upon said core; a first layer of blended wool yarns with different diameters wound upon said rubber layers; a second layer of blended wool yarns with different diameters wound upon said first layer; a moisture proof layer of soft foam wound upon said second layer; a layer of yarns wound upon said moisture proof layer and then sprayed with adhesive agent; and an outer cover encasing said layer of yarns. 